What do you think each Keyblade can transform into? On a side note, do you think that the χ-blade can transform? I doubt it since it's technically not a Keyblade, but who knows?
Here's what I think some Keyblades can transform into/what I'd want them to transform into (give me ideas for Keyblade transformations and I'll add them on here):
Kingdom Key: A very simply and elegant knight's sword.
Kingdom Key D: Same thing but different colors.
Jungle King: A bamboo sword.
Lionheart or Sleeping Lion: Leon's Gunblade.
Metal Chocobo: A Metallic Chocobo to ride on.
Fenrir: Cloud's Buster Sword/Fusion Blades.
Guardian Soul: Auron's Battlefields of War.
Dual Disc: Light Disc and Light Cycle.
Ferris Gear: A Ferris Wheel that could act sort of like an Attraction Flow.
Bond of Flame: Axel's Eternal Flames.
Glimpse of Darkness: Lexaeus' Skysplitter.
Two Become One: Oathkeeper & Oblivion.
Rejection of Fate: A giant spear.
Ends of the Earth: Ultima Cannon (confirmed)
Frolic Flame: Lea's Frisbees
One-Winged Angel: Sephiroth's Masamune
EDIT: Each Keyblade also has a second-stage transformation, for example, the twin blasters turn into the cannon. So, what do you think the second-stage transformations would be?